a sweet water-soluble protein that reminds stable over wide ranges of temperature and ph, brazzein has various applications. its tastes like cane sugar but have no calories. however, the extraction of brazzein from its natural source is expensive and not applicable. in this study we used recombinant dna technology to provide an alternative option for cheaper mass production of brazzein. a brazz...

chlamydia trachomatis is one of the main causes of sexually transmitted diseases (stds) such as  prostatitis and epididymitis in men and cervicitis, endometriosis, vaginitis and ureogenital tract infections in women.  serological tests with sensitivities related to specific antigens are commonly used as  routine laboratory tests for diagnosis of chlamydia. in this research the chlamydia major o...

results cloning was confirmed by pcr and restriction digestion. rt-pcr and sds-page represented expression of kgf in e. coli. the optimized expression was achieved 16 hours after induction with 0.3 mm iptg at 37°c in luria broth (lb) containing kanamycin. the 18 kda protein was confirmed by western blotting, using anti-his antibodies. conclusions the result of the present study indicated that e...

introduction: toxoplasma gondii (t. gondii) is distributed worldwide and infects most species. the serious incidence and severe or fatal injury caused by t. gondii infection clearly indicates the necessity for the event of a vaccine. the current study goals were to evaluate serological applications of toxoplasma gondiirhoptry protein 1 (rop1) antigen. materials and methods: we created a polymer...

conclusion our findings confirmed that a prokaryotic expression system of rureb229-561 was successfully constructed.the results of sds-page showed that our constructed prokaryotic expression system pet28a- ureb229-561 -bl21de3 efficiently produces target recombinant protein in the form of dissoluble inclusion body. therefore we can suggest that these epitopes can effectively be a vaccine candid...

background: the coccidian protozoa toxoplasma gondii is an obligate intracellular parasite of humans and other warm-blooded animals. diagnosis of toxoplasmosis is of considerable medical importance for human, especially pregnant women and immunocompromised individuals. the apply of an escherichia coli recombinant antigen(s) would be significantly useful in developing standardization of the diag...

conclusions: our data showed that the recombinant mature lysostaphin protein produced by pet32a vector in e. coli system was very efficient. results: pcr and sequencing results confirmed the successful cloning of the target gene into the vector. the expression of protein was induced by iptg and high concentration of the recombinant protein was obtained via the purification process by affinity-c...

objective(s):  infection by high-risk papillomavirus is regarded as the major risk factor in the development of cervical cancer. recombinant dna technology allows expression of the l1 major capsid protein of hpv in different expression systems, which has intrinsic capacity to self-assemble into viral-like particles (vlp). vlps are non-infectious, highly immunogenic and can elicit neutralizing a...

Creatinine amidohydrolase(EC 3.5.2.10) catalyzes the reversible conversion of creatinine to creatine. Creatininase in combination with other enzymes is used for detection of creatinine in serum and urine which is of significant value for detection of renal, muscular and thyroid functions. The aim of this study was to produce recombinant creatininase enzyme in E.coli expression system to use it ...